A violent mental patient got a one-day pass from a Staten Island psychiatric center — and never returned, cops said Thursday.

Vadim Babyrev, 44, was given the leave from South Beach Psychiatric Center in Ocean Breeze, where he has been confined since 1999 after attempting to kill his mother with an iron and striking a second person with the weapon in the eye, police sources said.

Babyrev was last seen leaving the facility on Seaview Avenue near Mason Avenue at about 5 p.m. last Saturday, cops said.

In 2006, he assaulted two guards in an attempt to bust out of the state mental-health facility, sources said.